ericphanson commented on issue #506:
URL: https://github.com/apache/arrow-julia/issues/506#issuecomment-2127399576
oh I misunderstood, it's inside a nested vector. I guess copying those would
do it?
```julia
df = DataFrame(Arrow.Table("/tmp/test.arrow"); copycols=true);
transform!(df, :foo => ByRow(copy) => :foo)
```
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